package com.kuiandjie.web;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class EncodingFilter implements Filter {

	private String value = "UTF-8";
	
	@Override
	public void destroy() {
		
	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain fc) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) arg0;
		HttpServletResponse response = (HttpServletResponse) arg1;
		
		request.setCharacterEncoding(value);
		fc.doFilter(request, response);
	}

	@Override
	public void init(FilterConfig fc) throws ServletException {
		String encoding = fc.getInitParameter("encoding");
		if(encoding != null) {
			value = encoding;
		}
	}

}
